{"title":"EM Channel Estimation for Coded OFDM Transmissions over Frequency-Selective Channel","authors":"Yang Liu, L. Brunel, J. Boutros","doi":"10.1109/ISSSTA.2008.107","DOIUrl":null,"url":null,"abstract":"We derive expectation-maximization (EM) based iterative algorithms to estimate the impulse response of multipath channel with coded OFDM system. We compare two ways for choosing EM complete data: a complete data built from observations and transmitted symbols (CL-EM) and complete data chosen by decomposing noise and observation components (NCD-EM). We also derive the Cramer-Rao lower bound (CRB) for coded OFDM transmission. Simulation results show that CLEM has better convergence than NCD-EM and achieves the CRB.","PeriodicalId":334589,"journal":{"name":"2008 IEEE 10th International Symposium on Spread Spectrum Techniques and Applications","volume":"70 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2008-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"9","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2008 IEEE 10th International Symposium on Spread Spectrum Techniques and Applications","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ISSSTA.2008.107","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 9
Abstract
We derive expectation-maximization (EM) based iterative algorithms to estimate the impulse response of multipath channel with coded OFDM system. We compare two ways for choosing EM complete data: a complete data built from observations and transmitted symbols (CL-EM) and complete data chosen by decomposing noise and observation components (NCD-EM). We also derive the Cramer-Rao lower bound (CRB) for coded OFDM transmission. Simulation results show that CLEM has better convergence than NCD-EM and achieves the CRB.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
